10th Class Physics Chapter 4 TestSOUND

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. Which of the following is required for sound to travel?

   1. A vacuum

   2. A medium

   3. Darkness

   4. Magnetic field

2. When we speak, which part of our body vibrates to produce sound waves?

   1. Eardrums

   2. Vocal cords

   3. Lungs

   4. Tongue

3. Loudness is primarily determined by the ...... of the vibrating body:

   1. Frequency

   2. Wavelength

   3. Amplitude

   4. Speed

4. To hear a distinct echo, the reflected sound must reach us after at least:

   1. 0.01 seconds

   2. 0.1 seconds

   3. 1.0 seconds

   4. 0.5 seconds

5. The characteristic that differentiates two sounds of the same loudness and pitch is called:

   1. Intensity

   2. Quality of sound

   3. Speed

   4. Frequency

6. Reflective surfaces placed behind the stage help to:

   1. Cancel the sound

   2. Direct sound toward the audience

   3. Decrease frequency

   4. Increase pitch

7. Bats use the phenomenon of echo to:

   1. Fly faster

   2. Find food and identify objects

   3. Produce light

   4. Sleep

8. What is required for the production of sound?

   1. A vacuum

   2. Vibrations of a medium

   3. Only air

   4. Light waves

9. Refraction of sound occurs because the ...... of sound differs in various mediums.

   1. Frequency

   2. Amplitude

   3. Speed

   4. Wavelength

10. Sound is produced by:

    1. Stationary objects

    2. Vibrating objects

    3. Heating objects

    4. Light wave